Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River
Pisciculture has been an important part of the economy in many regions of Brazil, and the tambaqui (Colossoma macropomum) stands out as one of the country’s most commercialized native freshwater fish species. Loss of genetic variability can affect characteristics such as reproduction and growth rate...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2020-11-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39585 |
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| author | Edmara Ramos Melo Alany Ítala Pontes Nascimento Sophia Tenenbaum Bacellar Corrêa Emerson Carlos Soares Elton Lima Santos Valéria Nogueira Machado Themis Jesus Silva |
| author_facet | Edmara Ramos Melo Alany Ítala Pontes Nascimento Sophia Tenenbaum Bacellar Corrêa Emerson Carlos Soares Elton Lima Santos Valéria Nogueira Machado Themis Jesus Silva |
| author_sort | Edmara Ramos Melo |
| collection | DOAJ |
| description | Pisciculture has been an important part of the economy in many regions of Brazil, and the tambaqui (Colossoma macropomum) stands out as one of the country’s most commercialized native freshwater fish species. Loss of genetic variability can affect characteristics such as reproduction and growth rates, as well as disease resistance and is of great concern in this field. Molecular markers such as mitochondrial DNA genes have been increasingly used to understand genetic variability in species of economic importance. This study aimed to characterize the genetic variability of tambaqui populations reared in two fish farms (Itiúba, AL and Betume, SE) of the lower São Francisco River by analyzing the control region and ATPase genes of mitochondrial DNA. Sequencing of samples from progenies and breeding individuals identified 42 haplotypes (32 unique), of which four haplotypes were shared between the two fish farms as a result of a founder effect, because individuals from Itiúba formed the stock of the Betume fish farming Station. Haplotype diversity was high in both locations. Analysis of Molecular Variance (AMOVA) revealed greater genetic variation within populations (96.76%) than between them (3.24%) and the FST value (0.03) indicated low genetic differentiation between the two populations. The observed high genetic variability can be explained by the number of breeders in the two fish farms (200 in Itiúba and 1400 in Betume) and the breeding management system, which seems to be effective in maintaining stock variability. |
| first_indexed | 2024-04-10T20:40:06Z |
| format | Article |
| id | doaj.art-0e61175a39f74a048e8ce859dd647c57 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-04-10T20:40:06Z |
| publishDate | 2020-11-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-0e61175a39f74a048e8ce859dd647c572023-01-24T19:53:05ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592020-11-01416Supl210.5433/1679-0359.2020v41n6Supl2p3323Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco RiverEdmara Ramos Melo0Alany Ítala Pontes Nascimento1Sophia Tenenbaum Bacellar Corrêa2Emerson Carlos Soares3Elton Lima Santos4Valéria Nogueira Machado5Themis Jesus Silva6Universidade Federal de AlagoasUniversidade Federal de AlagoasUniversidade Federal de AlagoasUniversidade Federal de AlagoasUniversidade Federal de AlagoasUniversidade Estadual do AmazonasUniversidade Federal de AlagoasPisciculture has been an important part of the economy in many regions of Brazil, and the tambaqui (Colossoma macropomum) stands out as one of the country’s most commercialized native freshwater fish species. Loss of genetic variability can affect characteristics such as reproduction and growth rates, as well as disease resistance and is of great concern in this field. Molecular markers such as mitochondrial DNA genes have been increasingly used to understand genetic variability in species of economic importance. This study aimed to characterize the genetic variability of tambaqui populations reared in two fish farms (Itiúba, AL and Betume, SE) of the lower São Francisco River by analyzing the control region and ATPase genes of mitochondrial DNA. Sequencing of samples from progenies and breeding individuals identified 42 haplotypes (32 unique), of which four haplotypes were shared between the two fish farms as a result of a founder effect, because individuals from Itiúba formed the stock of the Betume fish farming Station. Haplotype diversity was high in both locations. Analysis of Molecular Variance (AMOVA) revealed greater genetic variation within populations (96.76%) than between them (3.24%) and the FST value (0.03) indicated low genetic differentiation between the two populations. The observed high genetic variability can be explained by the number of breeders in the two fish farms (200 in Itiúba and 1400 in Betume) and the breeding management system, which seems to be effective in maintaining stock variability.https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39585ATPaseColossoma macropomumControl regionGenetic variability. |
| spellingShingle | Edmara Ramos Melo Alany Ítala Pontes Nascimento Sophia Tenenbaum Bacellar Corrêa Emerson Carlos Soares Elton Lima Santos Valéria Nogueira Machado Themis Jesus Silva Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River Semina: Ciências Agrárias ATPase Colossoma macropomum Control region Genetic variability. |
| title | Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River |
| title_full | Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River |
| title_fullStr | Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River |
| title_full_unstemmed | Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River |
| title_short | Genetic characterization of tambaqui stocks from two pisciculture stations in the lower São Francisco River |
| title_sort | genetic characterization of tambaqui stocks from two pisciculture stations in the lower sao francisco river |
| topic | ATPase Colossoma macropomum Control region Genetic variability. |
| url | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39585 |
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